Use of explosives in a Detonation Box to quickly make Gravel, along with other uses. Requires Advanced Chemistry (Level 1) to be unlocked at the particular university before it can be researched there.
Level required to learn: 32
WARNING Setting off a detonation box or a detonation charge will light bonfires several coords or more away. Apophis also warned that it could cause PERMANENT damage to other buildings, possibly including raeli tiles, (perhaps those in an oven or funerary temple). Moral: don't set explosives off near anything you care about.